Biogeography 21. 60–62. Sep. 20, 2019

A New Species of the Genus Latreille from Japan (: Thynnidae)

Mamoru TERAYAMA

Nakacho 2-12-29, Iwatsuki-ku, Saitama, 339-0054 Japan

Abstract: A new species of the genus Methocha is described from Japan: Methocha michinoku sp. nov.

Key words: Hymenoptera, Methochinde, Methocha, Japan

The genus Methocha Latreille, 1804 of the subfamily Methocha michinoku sp. nov. Methochinae comprises 71 species and distributed in the world excepting the Australian and Antarctic regions (Agnoli, 2005, [Japanese name: Michinoku-tsuya-aribachi] 2011; Guichard, 1971; Lin, 1966; Krombein, 1979, 1982; (Figs. 1–4, 6, 8, 9) Kimsey, 2011; Terayama & Mita, 2015). In Japan, 5 species have been known up to the present (Iwata, 1936; Yasumatsu, Diagnosis. Among the Asian congeners, this species is in 1931, 1933; Terayama & Mita, 2015). male especially resembles M. uchinanensis Terayama & Mita, Recently, I have examined remarkable specimen of this ge- 2015 from the Ryukyu Islands, southeastern Japan in the nus which have a large fovea on the mesopleuron. After care- mesopleuron with a large fovea and the clypeus without distal ful examination, I have concluded that this is new to science tubercle. However it is easily separated from the latter by the and describe herein. clypeus with a broadly convex median lobe at anterior margin The recent molecular phylogenetic study suggests that and the angulate lateral margins, and much densely punctuated Methochinae should be members of the family Thynnidae in frons and vertex of head. the superfamily Thynnoidea (Pilgrim et al., 2008; Debevec et Description. Holotype. Male. Structure: Head including al., 2012). In this paper, I tentatively follow the taxonomic eyes, 0.67 times as long as wide, with convex posterior mar- view. gin in full-face view; posterolateral corner round, not forming The following abbreviations are used in the descrip- angle; frons and vertex densely punctate; punctures ca. 0.02- tion: HL-head length; HW-head width; WF-width of frons; 0.03 mm in diameters; the punctures separated by 0.5-0.8 FWL-forewing length; TL-total body length; EL-eye length; times their own diameters; interspaces smooth and shining. POL-distance between posterior ocelli; AOL-distance between Mandible gently narrowed to apices, with almost straight up- the anterior ocellus and a posterior ocellus; OOL-distance per margin, with 2 teeth apically; basal half of outer surface from a posterior ocellus to nearest eye margin; WOT-distance rugose, apical half smooth and shining. Clypeus with shallow across and including posterior ocelli. longitudinal furrow at midlength, without discal tubercle; an- I express my cordial thanks to K. Goukon (Sendai-shi) for his terior margin with a broadly convex median lobe, and raised kindness in offering valuable material. towards apex; lateral margin with an angle. Antenna long; first 5 antennomeres in a ratio of 13 : 4 : 9 : 11 : 11 in length; scape Taxonomic Accounts flat and half circular, 1.4 times as long as maximum width; pedicel shorter than width; 3rd antennomere 1.6 times as long Subfamily Methochinae as wide; 4th and 5th antennomeres each 1.9 times as long as The subfamily contain two genera, Mathocha Latreille, wide, 6th to 12th antennomeres each longer than wide; 13th 1804 (nec Methoca Latreille, 1805, unjustified emendation), (terminal) antennomere 3.6 times as long as wide, with acute and Karlissa Krombein, 1979, which includes single species tip. Eye large and convex, with many long erect hairs; the from Sri Lanka. Among the 72 species of Methocha, 32 spe- hairs ca. 0.07-0.09 mm long; WF 1.08 times EL. Head from cies has been known from the Oriental region and 6 from the above half circular, with ratio of width to length 25 : 39, with Palaearctic region (Agnoli, 2014; Krombein, 1979, 1982; Lin, almost straight anterior margin and convex posterior margin; 1966; Pagden, 1949; Tsuneki, 1986; Terayama & Mita, 2015). posterolateral corner convex, not forming angle. Vertex largely −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− smooth, scattered with shallow small punctures. Ocelli form- *Corresponding author: [email protected] ing obtuse triangle; POL : AOL = 2 : 1 ; OOL as long as WOT;

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Figs. 1–7. Methocha michinoku sp. nov., male, holotype (1-4, 6), and M. uchinanensis Terayama & Mita, 2015, male (5, 7): 1, head, dorsal view; 2, left mandible, lateral view; 3, hypopygium, ventral view; 4, 5, clypeus, full-face view; 6, 7, mesopleura, lateral view.

anterior ocellus ca. 0.12 mm in diameter. Mesonotum with convex dorsum, sloping from anterior margin of pronotum to posterior margin of propodeum; pro- notal disc trapezoidal, wider than long, 0.34 times as long as wide, with straight anterior margin and weakly convex sides, and concave posterior margin in dorsal view; anterolateral corner forming distinct angle; anterior margin carinate; disc anteriorly with transverse striae, posterior portion subopaque with sparsely shallow punctures. Mesoscutum moderately punctate; scutellum with shallow punctures; large rectangular scutellar pit present at anterior margin, ca. 0.58 mm in length, with 5 longitudinal septums in the pit. Msopleuron scattered with shallow punctures, with a smaller fovea at upper portion and a large oval fovea at lower portion; the fovea 0.50 mm in the longest axis and 0.33 mm in the shortest axis, with many pubescences at upper portion. Propodeal dorsum convex in profile, posterodorsal margin not forming distinct angle; lat- eral surface coarsely reticulate; in dorsal view, propodeum half circular, 0.42 times as long as wide, posterolateral corner not forming angle, surface coarsely reticulate, with a median carina, without median longitudinal furrow; anterior border

Figs. 8, 9. Methocha michinoku sp. nov., holotype (male): 8, body, depressed. dorsal view; 9, ditto, lateral view. Metasoma slender, 5.3 mm in length; 3rd tergum 1.23 mm

– 61 – New species of Methocha from Japan in maximum length in dorsal view; 1st to 6th terga smooth Lin, K. S., 1966. The Methochidae of Taiwan (Hymenoptera: and shining; 7th tergum triangular, 1.29 times as long as wide, Scolioidea). Quart. Jour. Taiwan Mus., 19: 181-202. with small shallow punctures: 2nd to 6th sternum each with Pagden, H. T., 1949. Descriptions and records of Austro-Ma- densely punctate anterior half and smooth posterior half, me- laysian Methocidae and (Hymenoptera). Tran. dially depressed; hypopygium round and flat, without depres- Royal Entomol. Soc. Lond., 100: 191-231. sion, with punctures and longitudinal rugae. Pilgrim, E. M., C. D. Von Dohlen & J. P. Pitts, 2008. Molecu- Color. Body black; mandible black excepting brownish api- lar phylogenetics of indicate paraphyly of the su- ces; antenna and legs black; wings subhyaline, even brownish; perfamily and novel relationships of its component families pterostigma and wing veins blackish brown. and subfamilies. Zool. Scri., 41: 527-535. Measurements (mm). HL 1.25, HW 2.03, WF 1.00, EL Terayama, M. & T. Mita, 2015. New species of the genera 0.93, FWL 6.2, TL 10.5. Methocha Latreille and Hylomesa Krombein from Japan Holotype. Male, Minamigamo Beach, Sendai-shi, Miyagi (Hymenoptera: ). Jpn. Jour. Syst. Entomol., 21: Pref., 18. Vi. 2016, K. Goukon leg. 373-380. Type depository. National Agriculture and Food Research Tsuneki, K., 1986. A contribution to the knowledge of the Organization (NARO), Tsukuba, Japan. Taiwanese Tiphiidae (Hymenoptera, Tiphiidae). Spec. Publ. Etymology. The specific epithet is based on the name of Jpn. Hymeno. Associ., 33: 1-88. type locality, Michinoku (Old name of Miyagi Prefecture). Yasumatsu, K., 1931. On a new methocid, Mathoca [sic.] ja- ponica n. sp. from Japan (Hymenoptera. Methocidae). Kon- References tyû, Tokyo, 5: 12-16. Yasumatsu, K., 1933. On the male of Methoca [sic.] japonica Agnoli, G. L., 2005. The genus Methocha in Europe: a dis- Yasumatsu (Hymenoptera, Methocidae). Kontyû, Tokyo, 7: cussion on , distribution and likely origin of its 141-143. known species and subspecies (Hymenoptera Tiphiidae Methochinae). Bull. Insectol., 58: 35-47. (Received November 18, 2018; Accepted November 21, 2018) Agnoli, G. L., 2011. Chrysis. net website: Methocha (http:// www.chrysis.net/methocha/). (sited July. 7. 2018) Debevec, A. H., S. Cardinal & B. N. Danforth, 2012. Identi- fying the sister group to the : a molecular phylogeny of Aculeata with an emphasis on the superfamily . Zool. Scri., 41: 527-535. Guichard, K. M., 1971. A new European species of the genus Methoca [sic.]. Entomologist, 104: 285-286. Iwata, K., 1936. Biology of two Japanese species of Mathoca [sic.] with the description of a new species (Hymenoptera, Thynnidae). Kontyû, Tokyo, 10: 57-89. Kimsey, L. S., 2011. Tiphiidae of Madagascar (Hyme- noptera, Tiphiidae). Jour. Hymeno. Res., 22: 45-68. Krombein, K. V., 1979. Studies in the Tiphiidae (Hymenoptera Aculeata). XII. A new genus of Methochinae with notes on the subgenera of Methocha (Latreille) (Hymenoptera Acu- leata). Proc. Entomol. Soc. Washington, 81: 424-434. Krombein, K. V., 1982. Biosystematic studies of Ceylonese wasps. IX. A monograph of the Tiphiidae (Hymenoptera: Vespoidea). Smith. Cont. Zool., 374: 1-121. Latreille, P. A., 1804. Tableau méthodique des . Classe huitième. Insectes, Insecta. Nouv. Dic. d’Hist. Nat., 24: 129- 200. Latreille, P. A., 1805. Histoire Naturelle, Genérale et particu- lière des Crustacés et des Insectes. Vol. 13. Imp. F. Dufart, Paris, 432 pp.

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